1.Whenitwashisturntodeliverhisspeech£¬nervousand____________(embarrass)£¬hetookafewdeepbreathstocalmhimselfdown.

2.Whathesuggestedtomethensounds__________(practice).

3.Afteraseriesofresearches£¬theyfinallydrewa__________(conclude) thatthepollutionwastheleadingfactorcontributingtothedeathofthecreaturesintheriver.

4.Hewasbanned____________attendingthemeetingfornothavingthepermit.

5.Youcanscanthroughabook£¬readingonlythosepassages____________(concern).